CN203103241U - Spacing structure of circuit breaker - Google Patents
Spacing structure of circuit breaker Download PDFInfo
- Publication number
- CN203103241U CN203103241U CN 201220736334 CN201220736334U CN203103241U CN 203103241 U CN203103241 U CN 203103241U CN 201220736334 CN201220736334 CN 201220736334 CN 201220736334 U CN201220736334 U CN 201220736334U CN 203103241 U CN203103241 U CN 203103241U
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- China
- Prior art keywords
- rotating shaft
- pedestal
- operating mechanism
- circuit
- breaker
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- Expired - Lifetime
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- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The utility model relates to a spacing structure of a circuit breaker, belonging to the technical field of low-voltage molded case circuit breakers. The circuit breaker comprises a pedestal and an operation mechanism arranged on the pedestal; and is characterized in that the operation mechanism comprises a rotating shaft, the rotating shaft is equipped with two positioning bosses respectively at two end portions in the length direction, and the pedestal is equipped with two pits respectively in two sidewalls in the width direction, wherein the pits respectively accommodate the positioning bosses; and each pit is provided with a backstop surface, and each positioning boss is provided with a positioning surface, wherein when the operation mechanism carries out break separating or releasing, the positioning surfaces contact with the backstop surfaces to realize spacing for motion of the operation mechanism. The spacing structure of the circuit breaker has the advantages that structure is simple, miniaturization of the breaker can be realized, bearing intensity is reduced, and service life of product is prolonged.
Description
Technical field
The utility model belongs to the low-pressure plastic shell circuit breaker technical field, is specifically related to a kind of position limiting structure of circuit-breaker, is used for determining the settling position of circuit breaker when separating brake or trip status
Background technology
Operating mechanism is one of important component part of low-pressure plastic shell circuit breaker, and the form of four/five connecting rod switching mechanisms of operating mechanism is public.The combined floodgate of circuit breaker, separating brake or the operation of threading off all realize by the action of operating mechanism, is switched on or by disjunction with this circuit.
Circuit breaker determines that the method for contact of breaker open position has a variety of when separating brake or dropout.During sub-switching operation, operating mechanism is the quadric chain single-mode system, therefore, considers the operation possibility of structure, so long as the scheme of the restriction quadric chain degree of freedom can realize that all separating brake is spacing, determines the open position of moving contact; When threading off operation, operating mechanism is the five-bar mechanism system, have two independently degrees of freedom, therefore, the position of five-bar mechanism must be provided with two spacing points and realize during from definite the dropout, further consider from the angle of determining the moving contact open position, directly one of them spacing point is arranged on the direct-connected rotating shaft of moving contact on, can determine the open position of moving contact, a spacing point in addition then can be arranged on other connecting rod of five-bar mechanism.Therefore, take all factors into consideration the separating brake and both position limiting structures of operation of threading off, with in the rotating shaft that public spacing point is arranged at moving contact is connected or be practicable on the equivalent connector, circuit breaker has identical dynamic and static contact gap (be commonly called as out apart from) in the time of can guaranteeing separating brake and thread off operation.
Prior art such as U.S. Pat 5200907 disclose a kind of position limiting structure of circuit breaker, it is to be connected with the lower link of mechanism by the motive contact module of public connecting axle with multipole circuit breaker, the public connecting axle of motive contact module contacts spacing with two side plates of mechanism rack, realize the breaker open operation and the spacing of operation of threading off.This position limiting structure has certain advantage, and the contact matching between the metalwork realizes spacing, is beneficial to and improves mechanical endurance.The information of revealing from its schematic diagram, this position limiting structure is only applicable to the circuit breaker of contact arc-extinguishing system one pole sealed type modularization preparation, this circuit breaker is owing to adopt the setting of totally enclosed type contact arc-extinguishing system, control the electrode insulation performance easily, therefore run through the position limiting structure that the through universal driving shaft of each utmost point cooperates with metal side plate, circuit breaker for other types not necessarily is suitable for, may have a negative impact to the electrode insulation performance, and, this class formation is in order to keep the action consistency of each utmost point motive contact module, need be at the transmission levers of side plate arranged outside and side plate pivot, run through transmission levers by universal driving shaft and drive each utmost point motive contact module action, thus, this structure also has requirement to the space between circuit breakers pole, can enlarge the width dimensions of circuit breaker, be unfavorable for the miniaturization Design of circuit breaker.
In addition, also having a kind of in the prior art is that to provide limit stops directly to contact realization with the moving contact guide rod by separating brake when threading off operation spacing, this kind structure is in order to guarantee electric conductivity, the moving contact guide rod generally adopts copper material, because the quality of copper material is soft partially not shock-resistant, long term can make the guide rod distortion, thus the operating function that mechanism can not be brought into normal play.
In view of above-mentioned prior art, be necessary the existing circuit breaker position limiting structure is improved, for this reason, the applicant has done actively and effectively to explore, and technical scheme described below produces under this background
Summary of the invention
The purpose of this utility model is the position limiting structure that a kind of circuit-breaker will be provided, when the open position that can accurately determine moving contact when carrying out separating brake or thread off operation.
The purpose of this utility model reaches like this, a kind of position limiting structure of circuit-breaker, described circuit-breaker comprises pedestal and the operating mechanism that is arranged on the pedestal, characteristics are: described operating mechanism comprises rotating shaft, described rotating shaft has positioning boss in the end, two ends of length direction, described pedestal has the pit that is used to hold described positioning boss at the both sides of Width sidewall, described pit is formed with stop surface, be formed with locating surface on the described positioning boss, when operating mechanism carries out separating brake or threads off operation, described locating surface contacts with described stop surface, thereby realizes spacing to the operating mechanism action.
In a specific embodiment of the present utility model, vertical direction is approached on plane, described stop surface place, and the direction that contacts spacing power thus between rotating shaft and the pedestal is tending towards horizontal direction.
In another specific embodiment of the present utility model, described operating mechanism also comprises a pair of side plate that faces each other and be provided with; The elbow linkage comprises connecting rod and lower link, and this upper and lower connecting rod pivots around common axis each other and connects; Tripping, this tripping is supported on the described side plate rotationally, and is connected with last connecting rod pivot, and described lower link pivots with rotating shaft by common axis and is connected, and realizes rotating by the action of described elbow linkage; Tiller assembly, rotary axis of earth are supported on the described side plate, drive connection and the breaking operation that the action of elbow linkage realizes circuit breaker by the operation to the handle lever assembly.
Also have in the specific embodiment of the present utility model, described rotating shaft has the rotating shaft axle journal respectively in the centre of length direction, correspondingly, on the interpolar next door in the middle of the described pedestal, has the location hole wall respectively, the hub setting of described rotating shaft axle journal is in the hole wall of described location, described location hole wall cooperates with the side plate of operating mechanism, about the restriction rotating shaft, the left and right displacement degree of freedom, provides the rotary freedom of rotating shaft.
In of the present utility model and then specific embodiment, the cross sectional shape of described location hole wall is a circular arc.
The utility model is because after adopting said structure, the beneficial effect that has: at first, two ends by the shaft length direction and the both sides sidewall of pedestal engage that scarf is realized the separating brake of circuit breaker, the operation of threading off is spacing, simple in structure, can not take the circuit breaker interelectrode space, thereby, be beneficial to the miniaturization Design that realizes circuit breaker to improving electrode insulation Intensity Design, all favourable to the control of circuit breaker whole width size; Secondly, rotating shaft contacts with the engaging of pedestal and is the cooperation between the nonmetallic materials, in the design contact force direction is orientated as along circuit breaker length dimension direction, and is the large tracts of land contact form, is subjected to force intensity thereby can reduce, and helps improving the useful life of product.
Description of drawings
Fig. 1 is an example structure schematic diagram of the present utility model.
Fig. 2 is the three-dimensional exploded view that moving contact rotary axis module of the present utility model cooperates with pedestal.
Fig. 3 is the embodiment schematic diagram of rotating shaft described in the utility model.
Fig. 4 is the embodiment schematic diagram of pedestal described in the utility model.
Fig. 5 is the structural representation of the utility model in "on" position.
Fig. 6 is the structural representation of the utility model at trip status.
Fig. 7 is the structural representation of the utility model at gate-dividing state.
Among the figure: 1. cap assembly, 11. control panels, 12. top covers; 2. connecting rod, 23. lower links, 24. rotating shafts, 241. rotating shaft axle journals, 242. positioning boss, 2421. locating surfaces, 243. cavity volumes, 25. trippings, 26. tiller assemblies on operating mechanism, 21. side plates, 22.; 3. trip gear; 4. contact arc-extinguishing device; 5. pedestal, 51. is located hole walls, 52. pits, 521. stop surfaces; 6. moving contact component.
Embodiment
In order to make the public can fully understand technical spirit of the present utility model and beneficial effect; the applicant will describe in detail embodiment of the present utility model below in conjunction with the accompanying drawings; but the applicant is not restriction to technical scheme to the description of embodiment, anyly makes form but not the variation of essence all should be considered as protection range of the present utility model according to the utility model design.
Parts or element identical or same function indicate identical Reference numeral in the accompanying drawing.This patent is applicable to two utmost points, three utmost points or four utmost point breaker of plastic casing, and shown in the embodiment is the structure of three-pole breaker.
See also Fig. 1, Fig. 2 and in conjunction with Fig. 5, Fig. 6, Fig. 7, circuit-breaker comprises cap assembly 1, operating mechanism 2, trip gear 3, contact arc-extinguishing device 4 and pedestal 5.Described trip gear 3 comprises thermal overload release, magnetic release; Described operating mechanism 2 comprises a pair of side plate 21 that faces each other and be provided with; Tiller assembly 26, rotary axis of earth are supported on the described side plate 21; The elbow linkage comprises connecting rod 22 and lower link 23, and this upper and lower connecting rod 22,23 pivots around common axis each other and connects; Tripping 25, this tripping 25 is supported on the described side plate 21 rotationally, and is connected with last connecting rod 22 pivots; Rotating shaft 24, this rotating shaft 24 pivot by common axis with described lower link 23 and are connected, and realize rotating by the action of described elbow linkage; Drive connection and the breaking operation that the action of elbow linkage realizes circuit breaker by operation to handle lever assembly 26; Described cap assembly 1 comprises control panel 11 and top cover 12, and cap assembly 1 and pedestal 5 cooperate the shell that constitutes circuit breaker.Trip gear 3, contact arc-extinguishing device 4 dresses are installed in the pedestal 5, and the operating mechanism 2 of packing into then, described operating mechanism 2 cover on the contact arc-extinguishing device 4 of the utmost point wherein.
See also Fig. 2 and in conjunction with Fig. 3, the rotating shaft 24 of multipole circuit breaker (illustrated among the figure three-pole breaker) has at least 2 cavity volumes 243 that are used to hold moving contact component 6 and touch spring (not shown); Constitute the rotating shaft axle journal 241 of rotating shaft 24 between the adjacent cavity volume 243, the outside of the right and left cavity volume 243 has extended positioning boss 242 respectively, and described positioning boss 242 is formed with locating surface 2421 in a side that is positioned at cavity volume 243 opening directions.
See also Fig. 2 and in conjunction with Fig. 4, pedestal 5 broad wayss of three-pole breaker have extended three containing cavities, be used to hold contact arc-extinguishing device 4, the trip gear 3 that the every utmost point of circuit breaker is provided with.Be provided with two interpolar next doors between the containing cavity, pedestal 5 has sidewall respectively in the left and right sides of Width.Wherein, the interpolar next door is positioned at the location hole wall 51 that is provided with circular arc on breaker rotating axis 24 installation sites over against the position of rotating shaft axle journal 241, operating mechanism 2 is packed into behind the pedestal 5, rotating shaft 24 is by the rotating shaft axle journal 241 of location hole wall 51 supporting revolving shafts of pedestal 5, location hole wall 51 on the pedestal 5 cooperates with the side plate of operating mechanism 2, about the restriction rotating shaft 24, the left and right displacement degree of freedom, the rotary freedom of rotating shaft 24 is provided.Described pedestal 5 is at the both sides of Width sidewall and be positioned at that positioning boss 242 positions over against the rotating shaft two ends are provided with pit 52 on breaker rotating axis 24 installation sites, the positioning boss 242 that can hold rotating shaft 24 rotates within it, be formed with stop surface 521 in the described pit 52, and described rotating shaft 24 carry out separating brake or the movement locus of the action of threading off on contact spacing with the locating surface 2421 of positioning boss 242, plane, described stop surface 521 place is preferably approaches vertical direction, and the direction that contacts spacing power thus between rotating shaft 24 and the pedestal 5 approaches horizontal direction.
See also Fig. 5, when mechanism was in closing position, the rotating shaft axle journal of rotating shaft 24 241 formed supporting relations with pedestal 5 by the location hole wall on the interpolar next door 51, about the restriction rotating shaft 24, the left and right displacement degree of freedom.
See also Fig. 6, when mechanism is in dropout separating brake position, rotating shaft 24 forms supporting relation at the position-limiting action of rotating shaft axle journal 241 places and pedestal 5 by the side plate 21 of location hole wall 51 on the interpolar next door and operating mechanism 2, about the restriction rotating shaft 24, the left and right displacement degree of freedom.The rotary freedom of rotating shaft 24 is blocked only spacing because the locating surface 2421 on the positioning boss 242 contacts with described stop surface 521, circuit breaker keeps the dropout location status.
Further the operation of threading off is described, circuit breaker operation mechanism is carried out when threading off action, by the tiller assembly 26 in the operating mechanism 2, last connecting rod 21, lower link 22, tripping 25, the five-bar mechanism that rotating shaft 24 is formed is moved to the separating brake position by closing position, stop surface 521 on the pit 52 on the locating surface 2421 of the positioning boss 242 at described rotating shaft 24 length direction two ends and the pedestal 5 Width both sides contacts, then this contactor banking stop has retrained the one degree of freedom of described five-bar mechanism, be specially and limited rotatablely moving of rotating shaft 24, simultaneously, because spacing another degree of freedom that has retrained described five-bar mechanism of 21 pairs of trippings 25 of side plate, operating mechanism 2 arrives the dropout position.
See also Fig. 7, when mechanism is in the separating brake position, rotating shaft 24 by the location hole wall 51 on the interpolar next door and the position-limiting action of side plate 21, forms supporting relation at rotating shaft axle journal 241 places and pedestal 5, about the restriction rotating shaft 24, the left and right displacement degree of freedom.The rotary freedom of rotating shaft 24 is blocked only spacing because the locating surface 2421 on the positioning boss 242 contacts with described stop surface 521, circuit breaker keeps the dropout location status.
Further sub-switching operation is described, when circuit breaker operation mechanism is carried out the separating brake action, the quadric chain of being made up of tiller assembly 26, last connecting rod 22, lower link 23, rotating shaft 24 is moved to the separating brake position by closing position, stop surface 521 on the pit 52 on the locating surface 2421 of the positioning boss 242 at described rotating shaft 24 length direction two ends and the pedestal 5 Width both sides contacts, this contactor banking stop has retrained the one degree of freedom of quadric chain, be specially the motion that has limited rotating shaft 24, operating mechanism 2 arrives the separating brake position
Claims (5)
1.
A kind of position limiting structure of circuit-breaker, described circuit-breaker comprises pedestal (5) and is arranged on operating mechanism (2) on the pedestal (5), it is characterized in that: described operating mechanism (2) comprises rotating shaft (24), described rotating shaft (24) has positioning boss (242) in the end, two ends of length direction, described pedestal (5) has the pit (52) that is used to hold described positioning boss (242) at the both sides of Width sidewall, described pit (52) is formed with stop surface (521), be formed with locating surface (2421) on the described positioning boss (242), when operating mechanism (2) carries out separating brake or threads off operation, described locating surface (2421) contacts with described stop surface (521), thereby realizes spacing to the operating mechanism action.
2.
The position limiting structure of a kind of circuit-breaker according to claim 1 is characterized in that described stop surface (521) plane, place approaches vertical direction, and the direction that contacts spacing power between rotating shaft thus (24) and the pedestal (5) is tending towards horizontal direction.
3.
The position limiting structure of a kind of circuit-breaker according to claim 1 is characterized in that described operating mechanism (2) also comprises a pair of side plate (21) that faces each other and be provided with; The elbow linkage comprises connecting rod (22) and lower link (23), and connecting rod on this (22), lower link (23) pivot around common axis each other and connect; Tripping (25), this tripping (25) is supported on the described side plate (21) rotationally, and be connected with last connecting rod (22) pivot, described lower link (23) pivots with rotating shaft (24) by common axis and is connected, and realizes rotating by the action of described elbow linkage; Tiller assembly (26), rotary axis of earth are supported on the described side plate (21), drive connection and the breaking operation that the action of elbow linkage realizes circuit breaker by the operation to handle lever assembly (26).
4.
The position limiting structure of a kind of circuit-breaker according to claim 1, it is characterized in that described rotating shaft (24) has rotating shaft axle journal (241) respectively in the centre of length direction, correspondingly, on the interpolar next door in the middle of the described pedestal (5), has location hole wall (51) respectively, described rotating shaft axle journal (241) hub setting is in described location hole wall (51), described location hole wall (51) cooperates with the side plate (21) of operating mechanism (2), about the restriction rotating shaft (24), the left and right displacement degree of freedom, the rotary freedom of rotating shaft (24) is provided.
5.
The position limiting structure of a kind of circuit-breaker according to claim 4, the cross sectional shape that it is characterized in that described location hole wall (51) is a circular arc
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220736334 CN203103241U (en) | 2012-12-28 | 2012-12-28 | Spacing structure of circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220736334 CN203103241U (en) | 2012-12-28 | 2012-12-28 | Spacing structure of circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203103241U true CN203103241U (en) | 2013-07-31 |
Family
ID=48854626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220736334 Expired - Lifetime CN203103241U (en) | 2012-12-28 | 2012-12-28 | Spacing structure of circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203103241U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105374644A (en) * | 2014-08-06 | 2016-03-02 | 伊顿公司 | Trip bar stop |
-
2012
- 2012-12-28 CN CN 201220736334 patent/CN203103241U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105374644A (en) * | 2014-08-06 | 2016-03-02 | 伊顿公司 | Trip bar stop |
| CN105374644B (en) * | 2014-08-06 | 2019-09-06 | 伊顿智能动力有限公司 | Release lever stop device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130731 |